• @lemming741
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    111 month ago

    Vapor injection is the new technology. It’s why older heat pumps were useless below 32f.

    • @ikidd
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      121 month ago

      Vapor injection becomes an excuse to downsize the compressor and lowers the cost, it seems. You could easily go lower than 32 if you oversized the pump before EVI, but those were only in specific heatpumps.